Guide for drill chucks



Sept. 28, 1948.

H. J. WILL MOTT GUIDE FOR DRILL CHUCKS Original Filed Aug. 4. 1943 2 Sheets-Sheet 1 Patented Sept. 1948 GUIDE FOR DRILL GHUCKS Herbert J. Willmott, Beverly, Mass.,'assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Original application August 1943, Serial No.

497,415. Divided and this application December 21, 1944, Serial No. 569,122 p 1 Thi invention relates to means by which chucks for holding drills are guided for movemerit along predetermined paths, it beingparticularly concerned with the accurate maintenance of such paths. I

In the application for Letters Patent filed in my name in'the UnitedStates Patent Office on August 4, 1943, and bearing the Serial No. 497,415,

of which the present cas'eis a division, there is disclosed a machine in which a plurality of drills act simultaneously upon a shoe-heel. This is'to form through'the heel-seat-end a groupof passages arranged in accordance with a drilling design, which corresponds to a group of nails inserted in the heel-seat of a shoe. These nails are to enter the heel-passages to effect the attach guided thatthe correct designs are attained. To

this end, I provide a drill-mounting in which is one or more depressions, each furnishing aguide way and having two walls substantially at right angles to each other. In contact with one of the walls, adrill-chuck-carrier is movable with'the axis ofthe drill parallel to said wall. In the chuck-carrier-is a groove extending transversely ofthe axis of the drill, and along'the second depression-wall a guide member is movable; it lying 7 Claims. (01. 14492) in the carrier-groove. In this second wall, means is movable for forcing the guide member into the carrier-groove. These two mounting surfaces may be machined accurately, so their relationto the mounting and to each other'is definitely established, as is also the effect of theforcing ,or adjusting means upon the guide member and carrier. The adjusting means may consist of a single screw threaded into the second depression-wall, with its axis substantially parallel to the first depression-wall. Preferably, the guide member has two inclined surfaces entering andcomplernental to surfaces of a V-groove in the chuck-carrier. It also has a third surface inclined with respect to the guideway-wall along which the chuck-carrier is movable, this third surface receiving'jcontact of a compl'emental inclined surface on the adjusting screw. Afterthe guide member has been 2 brought by this screw-surface into correct en.- gagement with the carrier, and said carrier with the depression-wall, they may be there retained by means shown as consisting of a plate extending along the guide member and forced against it by screws threaded into the mounting. Locking means is providedfor the adjusting screw. .This may consist of a peripheral inclined surface on the screw and a plate having a surface complemental thereto, these surfaces being forced into lockingengagement. The previously mentioned application matured into. Patent No. 2,379,844 on July 10,1945. v In the accompanying drawing illustratinga particular embodiment. of the invention,

1 Fig. 1 is an enlarged front eleva ion of the drilling. mechanism, with the means for varying the drilling design;

I Fig. 2, an enlarged longitudinal sectional detail through one of the drill-chucks;

Fig. 3, an enlarged sectionaldetail of the chuckguiding and retaining means on the line III-411 of Fig. 1; v v Fig.4, a rear elevation of said guiding and.re taining means; and

Fig, 5, an enlarged sectional detail :on the line Upon spaced horizontal rods 50, 50 furnishing a portion of the frame of a drilling machine, a main slide 54 is movable under the power of the machine. Upon this slide a second slide 92 is variable in position longitudinally to alter the depth of drilling. Fixed to the adjusting slide is a mount.-- ing head 56. In a depression I50 in therear face of the upper portion of the mounting is secured a carrier I52 for one of a p urality f c u ks K or drills ,58, this'carrier I52 corresponding to therear nail of a group inserted in the heel-seat of a shoe. Four carriers I54 are guidedin radiating orout wardly diverging depressions I56 in the mounting, j

and at the inner extremity of each of the carriers I52 and I54 is a horizontal bore Ilillto receivea driven chuck-shaft I60. Each chuck-shaft is re: tatable in flanged bushings 202 fitting the op.- posite ends of the bore I58, and has threaded upon its forward extremity a flanged s leevef204 This forces back. into a conical depression in the A latch I12 upon the arm enters any one of a series of notches H4 in a segment I16 attached to the top of the mounting 56 to fix the plate in a plurality of angular positions corresponding to difierent drilling and inserting designs, indicated by designations I18 associated with the segmentnotches. v

To guide each of the carriers I54 accurately in their movement of adjustment along the depressions I56 by the cam-plate I66, each of these depressions has a longitudinal wall with a finished surface a extending along a plane parallel to the axis of the corresponding drill, in the direction in which said drill is to move in its action upon the heel. At one side of each depression is an extension I'8I of less length than the main depression, and having at its forwardextremity a wall upon which is a finished surface I) at right angles to the surface a and to the axis of the drill. With each mounting-surface (1 contacts a finished surface upon one of the carriers I54, this lying parallel to the axis of its drill. Between all other portions of the carrier and the mounting there is clearance space. At the side of the carrier opposite the surface 0 is a longitudinal V-groove [80 extending transversely of the axis of "the drill. Lying in this groove is an elongated guide member I82, having'side walls 11 complemental to and contacting with the walls of the groove. A surface e of the guide member is movable in contact with the mounting-surface b toward and .from themounting-surface a. This movement is effected and maintained to hold the carrier-surface c at all times in close sliding contact with the mounting-surface a, by a generally cylindrical adjusting screw I 88, lying in the depression-extension I8I with its end threaded into the wall b of the mounting. The adjusting member I88 has adjacent to the threaded end an inclined peripheral surface I90, engaging a, complemental surface I92 upon the guide member. It is provided with a slotted head I94, through which it may be rotated to urge the surface I90 against the surface I92 of the guide member. Moving along the carrier-surface b, the

guide member forces the carrier-surface 0 into accurate engagement, throughout its length, with the mounting-surface a, keeping the carrier away from all other mounting-surfaces Therefore, as the carrier is positioned by the cam-slot 164 in the plate I66 along the depression I56 for different drilling designs, the path in which it is moving will be accurately maintained by the bearing furnished by the mounting-surface a and the guide-surfaces d, d. Wear may readily be taken up by the adjusting screw I83 without disturbing the path in which the drill is to move, and new carriers may be supplied for those which are worn or broken, with no other fitting or adjustment than is furnished by manipulation of the member I88.

To hold the guide member I82 in its adjusted relation, a cover-plate. I84 extends along it in contact with a surface 1 opposite the surface e. The cover-plate is urged into clamping relation to the guide member by screws I86, I86, which extend with some clearance through openings in said guide member and are threaded into the mounting. The adjusting member I88 lies in a clearance-opening in the cover-plate. To secure this member againstrotation as adjusted, a lock-, ing plate I96 has an opening with a conical wall I98, which contacts with a complementally inclined periphery on the head I94 of the member. The locking plat I96is attached to the coverplate I84 and forced into its locking relation, by a screw 200 threaded into the cover-plate with its head bearing against the locking plate.

In taking up wear in any one of the adjustable chuck-carriers I 54, it is only necessary to remove the plates I66 and I68 of the mountmgthis giving access to all the chuck-carriers with their guides and associated elements. Backing off the screws 200 and I86 to release the adjusting screw I88 and the retaining plate I84, said adjusting screw .is rotated to force its inclined surface I90 againstthe surface J92 of the guide member I82. This urges the surfaces d, cl of the guide member into contact with the carrier-surfaces I80, I80, and, consequently, the surface 0 of the carrier against the surface a of the mounting, without affecting the position of the carrier longitudinally of the drill'contained in the carrier-chuck. There is thus. determined a. path parallel to the drillaxis along which the carrier may be adjusted by the action of the cam-slot I64. The screws I86 and 200 are then tightened to clamp the guiding andadjusting elements in place. If a chuckcarrier is to be replaced, the plate I96 and screw I88 are removed, and then the plate I84 and guide I82. This frees the carrier, which .is talnen out, another substituted, and the associated elements returned in the reverse order. .It is to be observed that the chuck-carrier-guiding means, with the adjusting and securing elements, are contained compactly within the depression in the mounting, yet all are readily accessible.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a drilling machine, a mounting in which is adepression having two walls substantially at right angles to each other, a. drill-chuck-carrier movable incontact with one of the depression- Wal-ls with. the axis of the drill parallel to said walLsaidcarrier having a groove extending transversely of the axis of the drill, a guide member movable along the second depression-wall toward the first-mentioned wall and lying in the groove in thecarrier, and means movablein said second depression-wall for forcing the guide member into the carrier-groove against opposite walls thereof;

, 2. In adrilling machine, a mounting in which is a depression having two walls substantially at right'angles to each other, a drill-chuck-carrier movable in contact with one of the depressionwalls witht-he axis of the drill parallel to said wall, said carrier having a groove extending transversely of the axis of the drill, a guide member movable along the second depression-wail and lying in the groovein the carrier, ands. screw threaded into the second depression-wall with its axis substantially parallel to the first depressionwall and'engaging the guide member to force it toward said first depression-wall.

3; In a drilling machine, a mounting in which is a depression'havingtwo walls substantially'at right angles to each other, a drill-chuck-carrier movable in contact with one of the depressionwalls with the axis of the drill parallel to said wall, said carrier having a groove extending transversely of the axis of the drill, a guide member movable along the second depression-wall andlying in the groove in the carrier, means movable in said second depression-wall for forcing the guide member into the carrier-groove, means for retaining the guide member in the position to which it may be forced, and means movable into engagement with the forcing means for locking said forcing means in the position to which it may be moved.

4. In a drilling machine, a, mounting having a guideway, a drill-chuck-carrier movable along the guideway in contact with one of the walls thereof and provided with a V-groove extending transversely of the axis of the drill, a guide member movable upon the mounting at the opposite side of the chuck-carrier from the guideway-wall and having two inclined surfaces complemental to and contacting with those of the groove and with a third surface inclined to the guidewaywall, and a guide-adjusting screw threaded into the mounting and having an inclined surface complemental to and engaging the third inclined surface of the guide member. I

5. In a drilling machine, a mounting having a guideway, a drill-chuck-carrier movable along the guideway in contact with one of the walls thereof and provided with a V-groove extending transversely of the axis of the drill, a guide member movable upon the mounting at the opposite side of the chuck-carrier from the guideway-wall and having two inclined surfaces complemental to and contacting with those of the groove and with a, third surface inclined to the guidewaywall, a guide-adjusting screw threaded into the mounting and having an inclined surface complemental to and engaging the third inclined surface of the guide member, a plate extending along the guide member, and screws threaded into the mounting and by which the plate may be forced into retaining engagement with the guide memher.

6. In a drilling machine, a, mounting having a guideway, a drill-chuck-carrier movable along the guideway in contact with one of the walls thereof and provided with a V-groove extending transversely of the axis of the drill, a guide member movable upon the mounting at the opposite side of the chuck-carrier from the guideway-wall and having two inclined surfaces complemental to and contacting with those of the groove and with athirdsurfaceinclined to the guide-way wall,

a guide-adjusting screw threaded into the mounting, said screw having an inclined surface complemental to and engaging the third inclined surface of the guide member and having a peripheral inclined surface, a plate extending along the guide member, screws threaded into the mounting and by which the plate may be forced into retaining engagement with the guide member, a locking plate for the adjusting screw provided with a surface complemental to the peripheral inclined surface, and a screw threaded into the retaining plate and by which the inclined surfaces of the locking plate and guide-adjusting screw may be forced into engagement.

'7. In a drilling machine, a mounting having guideways, chuck-carriers movable along the guideways in contact with one wall thereof, a member having a plurality of cam-slots each of which extends transversely of the wall of one of the guideways and acts upon the chuck-carrier therein to adjust it along said guideway-wall in accordance with different drilling designs, a guide member extending across each cam-slot and movable upon the mounting at the opposite side of the chuck-carrier from the guideway-wall, and 1 means for forcing each guide member into engagement with its chuck-carrier and said chuckcarrier against the guideway-wall to maintain its movement by the cam-slot in the path required for the drilling design.

HERBERT J. WILLMOTT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 500,646 Whiton July 4, 1893 544,495 Zinzen Aug. 13, 1895 563,545 Bausch July '7, 1896 1,299,828 Fulton Apr. 8, 1919 1,799,812 Haskell Apr. 7, 1931 1,858,898 Mesker May 17, 1932 Certificate of Correction September 28, 1948.

Patent No. 2,450,066.

HERBERT J. WILLMOTT It is hereby certified that error appears in the printed spe numbered patent requiring correction as follows:

Column 2, line 12, for the patent number 2,379,844 read 2,379,944; and that the said Letters ction therein that the Patent should be read with this corre same may conform to the record of the case in the Patent Oflice.

Signed and sealed cification of the above this 5th day of April, A. D. 1949.

THOMAS F. MURPHY,

Assistant Commissioner of Patents.

Certificate of Correction September 28, 1948.

Patent No. 2,450,066.

HERBERT J. WILLMOTT certified that error appears in the printed specification of the above ction as follows:

atent number 2,379,844 read 2,879,944; and that the said Letters Patent should be read with this correction therein rd of the case in e Patent Oflice.

same may conform to the reco Signed and sealed this 5th day of April, A. D. 1949.

It is hereby numbered patent requiring corre Column 2, line 12, for the p that the THOMAS F. MURPHY,

Assistant Commissioner of Patents. 

